Home / 12,384.10-18,578.40-4,061.80

Finding the Fourth Proportional to 12,384.10, 18,578.40 and 4,061.80

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Solution

The fourth proportional to 12,384.10, 18,578.40 and 4,061.80 is: 6,093.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,384.10 : 18,578.40 = 4,061.80 : x
  2. Step 2: Convert to fraction form
    12,384.10/18,578.40 = 4,061.80/x
  3. Step 3: Cross multiply
    12,384.10x = 18,578.40 × 4,061.80
  4. Step 4: Simplify right side
    12,384.10x = 75,461,745.12
  5. Step 5: Solve for x
    x = 75,461,745.12/12,384.10
  6. Step 6: Final answer
    x = 6,093.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.